ID

VAR-201711-0007

CVE

CVE-2016-8610

TITLE

OpenSSL  Service operation interruption in  (DoS)  Vulnerability

DESCRIPTION

A denial of service flaw was found in OpenSSL 0.9.8, 1.0.1, 1.0.2 through 1.0.2h, and 1.1.0 in the way the TLS/SSL protocol defined processing of ALERT packets during a connection handshake. A remote attacker could use this flaw to make a TLS/SSL server consume an excessive amount of CPU and fail to accept connections from other clients. OpenSSL is prone to denial-of-service vulnerability. Successful exploitation of the issue will cause excessive memory or CPU resource consumption, resulting in a denial-of-service condition. It supports a variety of encryption algorithms, including symmetric ciphers, hash algorithms, security hashing algorithm, etc. This software, such as Apache HTTP Server, is common to multiple JBoss middleware products, and is packaged under Red Hat JBoss Core Services to allow for faster distribution of updates, and for a more consistent update experience. Security Fix(es): * A memory leak flaw was found in the way OpenSSL handled TLS status request extension data during session renegotiation. A remote attacker could cause a TLS server using OpenSSL to consume an excessive amount of memory and, possibly, exit unexpectedly after exhausting all available memory, if it enabled OCSP stapling support. (CVE-2016-6304) * It was discovered that the mod_session_crypto module of httpd did not use any mechanisms to verify integrity of the encrypted session data stored in the user's browser. (CVE-2016-0736) * It was discovered that the mod_auth_digest module of httpd did not properly check for memory allocation failures. (CVE-2016-2161) * A timing attack flaw was found in OpenSSL that could allow a malicious user with local access to recover ECDSA P-256 private keys. (CVE-2016-8610) * It was discovered that the HTTP parser in httpd incorrectly allowed certain characters not permitted by the HTTP protocol specification to appear unencoded in HTTP request headers. If httpd was used in conjunction with a proxy or backend server that interpreted those characters differently, a remote attacker could possibly use this flaw to inject data into HTTP responses, resulting in proxy cache poisoning. (CVE-2016-8743) * A vulnerability was found in httpd's handling of the LimitRequestFields directive in mod_http2, affecting servers with HTTP/2 enabled. (CVE-2016-8740) Red Hat would like to thank the OpenSSL project for reporting CVE-2016-6304 and Shi Lei (Gear Team of Qihoo 360 Inc.) for reporting CVE-2016-8610. Upstream acknowledges Shi Lei (Gear Team of Qihoo 360 Inc.) as the original reporter of CVE-2016-6304. After installing the updated packages, the httpd daemon will be restarted automatically. Bugs fixed (https://bugzilla.redhat.com/): 1377600 - CVE-2016-6304 openssl: OCSP Status Request extension unbounded memory growth 1384743 - CVE-2016-8610 SSL/TLS: Malformed plain-text ALERT packets could cause remote DoS 1401528 - CVE-2016-8740 httpd: Incomplete handling of LimitRequestFields directive in mod_http2 1406744 - CVE-2016-0736 httpd: Padding Oracle in Apache mod_session_crypto 1406753 - CVE-2016-2161 httpd: DoS vulnerability in mod_auth_digest 1406822 - CVE-2016-8743 httpd: Apache HTTP Request Parsing Whitespace Defects 1412120 - CVE-2016-7056 openssl: ECDSA P-256 timing attack key recovery 6. JIRA issues fixed (https://issues.jboss.org/): JBCS-319 - Errata for httpd 2.4.23 SP1 RHEL 7 7. Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies. If sendfile processing completed quickly, it was possible for the Processor to be added to the processor cache twice. This could lead to invalid responses or information disclosure. (CVE-2017-5647) * A vulnerability was discovered in the error page mechanism in Tomcat's DefaultServlet implementation. A crafted HTTP request could cause undesired side effects, possibly including the removal or replacement of the custom error page. Solution: Before applying the update, back up your existing Red Hat JBoss Web Server installation (including all applications and configuration files). The References section of this erratum contains a download link (you must log in to download the update). CVE-2016-8610 It was discovered that no limit was imposed on alert packets during an SSL handshake. CVE-2017-3731 Robert Swiecki discovered that the RC4-MD5 cipher when running on 32 bit systems could be forced into an out-of-bounds read, resulting in denial of service. For the stable distribution (jessie), these problems have been fixed in version 1.0.1t-1+deb8u6. For the unstable distribution (sid), these problems have been fixed in version 1.1.0d-1 of the openssl source package and in version 1.0.2k-1 of the openssl1.0 source package. We recommend that you upgrade your openssl packages. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: gnutls security, bug fix, and enhancement update Advisory ID: RHSA-2017:0574-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2017-0574.html Issue date: 2017-03-21 CVE Names: CVE-2016-8610 CVE-2017-5335 CVE-2017-5336 CVE-2017-5337 ===================================================================== 1. Summary: An update for gnutls is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64 3. Description: The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library, which implements cryptographic algorithms and protocols such as SSL, TLS, and DTLS. The following packages have been upgraded to a later upstream version: gnutls (2.12.23). (CVE-2016-8610) * Multiple flaws were found in the way gnutls processed OpenPGP certificates. An attacker could create specially crafted OpenPGP certificates which, when parsed by gnutls, would cause it to crash. (CVE-2017-5335, CVE-2017-5336, CVE-2017-5337) Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9 Technical Notes linked from the References section. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1320982 - ASSERT failure in gnutls-cli-debug 1321112 - DHE_DSS ciphers don't work with client certificates and OpenSSL using TLSv1.2 1323215 - gnutls-serv --http crashes with client certificates with NSS client 1326073 - GnuTLS prefers SHA-1 signatures in TLSv1.2 1326389 - GnuTLS server does not accept SHA-384 and SHA-512 Certificate Verify signatures despite advertising support for them 1326886 - GnuTLS server rejects connections that do not advertise support for SHA-1 signature algorithms 1327656 - gnutls-serv: closing connection without sending an Alert message 1328205 - gnutls-cli won't send certificates that don't match hashes in Certificate Request 1333521 - Provide ability to set the expected server name in gnutls-serv utility 1335924 - gnutls: Disable TLS connections with less than 1024-bit DH parameters 1337460 - Disable/remove export ciphersuites in GnuTLS 1384743 - CVE-2016-8610 SSL/TLS: Malformed plain-text ALERT packets could cause remote DoS 1411836 - CVE-2017-5337 gnutls: Heap read overflow in read-packet.c 1412235 - CVE-2017-5335 gnutls: Out of memory while parsing crafted OpenPGP certificate 1412236 - CVE-2017-5336 gnutls: Stack overflow in cdk_pk_get_keyid 1415682 - Changes introduced by rebase to 2.12.23 break API and ABI compatibility for some libraries 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: gnutls-2.12.23-21.el6.src.rpm i386: gnutls-2.12.23-21.el6.i686.rpm gnutls-debuginfo-2.12.23-21.el6.i686.rpm gnutls-utils-2.12.23-21.el6.i686.rpm x86_64: gnutls-2.12.23-21.el6.i686.rpm gnutls-2.12.23-21.el6.x86_64.rpm gnutls-debuginfo-2.12.23-21.el6.i686.rpm gnutls-debuginfo-2.12.23-21.el6.x86_64.rpm gnutls-utils-2.12.23-21.el6.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): i386: gnutls-debuginfo-2.12.23-21.el6.i686.rpm gnutls-devel-2.12.23-21.el6.i686.rpm gnutls-guile-2.12.23-21.el6.i686.rpm x86_64: gnutls-debuginfo-2.12.23-21.el6.i686.rpm gnutls-debuginfo-2.12.23-21.el6.x86_64.rpm gnutls-devel-2.12.23-21.el6.i686.rpm gnutls-devel-2.12.23-21.el6.x86_64.rpm gnutls-guile-2.12.23-21.el6.i686.rpm gnutls-guile-2.12.23-21.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: gnutls-2.12.23-21.el6.src.rpm x86_64: gnutls-2.12.23-21.el6.i686.rpm gnutls-2.12.23-21.el6.x86_64.rpm gnutls-debuginfo-2.12.23-21.el6.i686.rpm gnutls-debuginfo-2.12.23-21.el6.x86_64.rpm gnutls-utils-2.12.23-21.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): x86_64: gnutls-debuginfo-2.12.23-21.el6.i686.rpm gnutls-debuginfo-2.12.23-21.el6.x86_64.rpm gnutls-devel-2.12.23-21.el6.i686.rpm gnutls-devel-2.12.23-21.el6.x86_64.rpm gnutls-guile-2.12.23-21.el6.i686.rpm gnutls-guile-2.12.23-21.el6.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: gnutls-2.12.23-21.el6.src.rpm i386: gnutls-2.12.23-21.el6.i686.rpm gnutls-debuginfo-2.12.23-21.el6.i686.rpm gnutls-devel-2.12.23-21.el6.i686.rpm gnutls-utils-2.12.23-21.el6.i686.rpm ppc64: gnutls-2.12.23-21.el6.ppc.rpm gnutls-2.12.23-21.el6.ppc64.rpm gnutls-debuginfo-2.12.23-21.el6.ppc.rpm gnutls-debuginfo-2.12.23-21.el6.ppc64.rpm gnutls-devel-2.12.23-21.el6.ppc.rpm gnutls-devel-2.12.23-21.el6.ppc64.rpm gnutls-utils-2.12.23-21.el6.ppc64.rpm s390x: gnutls-2.12.23-21.el6.s390.rpm gnutls-2.12.23-21.el6.s390x.rpm gnutls-debuginfo-2.12.23-21.el6.s390.rpm gnutls-debuginfo-2.12.23-21.el6.s390x.rpm gnutls-devel-2.12.23-21.el6.s390.rpm gnutls-devel-2.12.23-21.el6.s390x.rpm gnutls-utils-2.12.23-21.el6.s390x.rpm x86_64: gnutls-2.12.23-21.el6.i686.rpm gnutls-2.12.23-21.el6.x86_64.rpm gnutls-debuginfo-2.12.23-21.el6.i686.rpm gnutls-debuginfo-2.12.23-21.el6.x86_64.rpm gnutls-devel-2.12.23-21.el6.i686.rpm gnutls-devel-2.12.23-21.el6.x86_64.rpm gnutls-utils-2.12.23-21.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): i386: gnutls-debuginfo-2.12.23-21.el6.i686.rpm gnutls-guile-2.12.23-21.el6.i686.rpm ppc64: gnutls-debuginfo-2.12.23-21.el6.ppc.rpm gnutls-debuginfo-2.12.23-21.el6.ppc64.rpm gnutls-guile-2.12.23-21.el6.ppc.rpm gnutls-guile-2.12.23-21.el6.ppc64.rpm s390x: gnutls-debuginfo-2.12.23-21.el6.s390.rpm gnutls-debuginfo-2.12.23-21.el6.s390x.rpm gnutls-guile-2.12.23-21.el6.s390.rpm gnutls-guile-2.12.23-21.el6.s390x.rpm x86_64: gnutls-debuginfo-2.12.23-21.el6.i686.rpm gnutls-debuginfo-2.12.23-21.el6.x86_64.rpm gnutls-guile-2.12.23-21.el6.i686.rpm gnutls-guile-2.12.23-21.el6.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: gnutls-2.12.23-21.el6.src.rpm i386: gnutls-2.12.23-21.el6.i686.rpm gnutls-debuginfo-2.12.23-21.el6.i686.rpm gnutls-devel-2.12.23-21.el6.i686.rpm gnutls-utils-2.12.23-21.el6.i686.rpm x86_64: gnutls-2.12.23-21.el6.i686.rpm gnutls-2.12.23-21.el6.x86_64.rpm gnutls-debuginfo-2.12.23-21.el6.i686.rpm gnutls-debuginfo-2.12.23-21.el6.x86_64.rpm gnutls-devel-2.12.23-21.el6.i686.rpm gnutls-devel-2.12.23-21.el6.x86_64.rpm gnutls-utils-2.12.23-21.el6.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): i386: gnutls-debuginfo-2.12.23-21.el6.i686.rpm gnutls-guile-2.12.23-21.el6.i686.rpm x86_64: gnutls-debuginfo-2.12.23-21.el6.i686.rpm gnutls-debuginfo-2.12.23-21.el6.x86_64.rpm gnutls-guile-2.12.23-21.el6.i686.rpm gnutls-guile-2.12.23-21.el6.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2016-8610 https://access.redhat.com/security/cve/CVE-2017-5335 https://access.redhat.com/security/cve/CVE-2017-5336 https://access.redhat.com/security/cve/CVE-2017-5337 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.9_Release_Notes/index.html https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.9_Technical_Notes/index.html 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2017 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFY0POlXlSAg2UNWIIRAhsCAJ0f16s1qzndcPHdUSHLmbQGvbQvcACggquH 8b1zEPEmPqMh/S/pZTQy6OE= =e+1d -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . =========================================================================== Ubuntu Security Notice USN-3183-2 March 20, 2017 gnutls26 vulnerability =========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS Summary: GnuTLS could be made to hang if it received specially crafted network traffic. Software Description: - gnutls26: GNU TLS library Details: USN-3183-1 fixed CVE-2016-8610 in GnuTLS in Ubuntu 16.04 LTS and Ubuntu 16.10. This update provides the corresponding update for Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. Original advisory details: Stefan Buehler discovered that GnuTLS incorrectly verified the serial length of OCSP responses. A remote attacker could possibly use this issue to bypass certain certificate validation measures. This issue only applied to Ubuntu 16.04 LTS. (CVE-2016-7444) Shi Lei discovered that GnuTLS incorrectly handled certain warning alerts. A remote attacker could possibly use this issue to cause GnuTLS to hang, resulting in a denial of service. This issue has only been addressed in Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-8610) It was discovered that GnuTLS incorrectly decoded X.509 certificates with a Proxy Certificate Information extension. This issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2017-5334) It was discovered that GnuTLS incorrectly handled certain OpenPGP certificates. (CVE-2017-5335, CVE-2017-5336, CVE-2017-5337) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS: libgnutls26 2.12.23-12ubuntu2.7 Ubuntu 12.04 LTS: libgnutls26 2.12.14-5ubuntu3.14 In general, a standard system update will make all the necessary changes

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

resource management error

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Shi Lei from Gear Team, Qihoo 360 Inc.

SOURCES

LAST UPDATE DATE

2024-12-21T22:13:26.682000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE